com32/libutil/ansiraw.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   Permission is hereby granted, free of charge, to any person
   6  *   obtaining a copy of this software and associated documentation
   7  *   files (the "Software"), to deal in the Software without
   8  *   restriction, including without limitation the rights to use,
   9  *   copy, modify, merge, publish, distribute, sublicense, and/or
  10  *   sell copies of the Software, and to permit persons to whom
  11  *   the Software is furnished to do so, subject to the following
  12  *   conditions:
  13  *
  14  *   The above copyright notice and this permission notice shall
  15  *   be included in all copies or substantial portions of the Software.
  16  *
  17  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  19  *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20  *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  21  *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22  *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  *   OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * ----------------------------------------------------------------------- */
  27
  28 /*
  29  * ansiraw.c
  30  *
  31  * Configures the console for ANSI output in raw mode; versions
  32  * for COM32 and Linux support.
  33  */
  34
  35 #ifdef __COM32__
  36
  37 #include <stdio.h>
  38 #include <unistd.h>
  39 #include <console.h>
  40
  41 void console_ansi_raw(void)
  42 {
  43     openconsole(&dev_rawcon_r, &dev_ansiserial_w);
  44 }
  45
  46 #else
  47
  48 #include <stdio.h>
  49 #include <termios.h>
  50
  51 static struct termios original_termios_settings;
  52
  53 static void __attribute__ ((constructor)) console_init(void)
  54 {
  55     tcgetattr(0, &original_termios_settings);
  56 }
  57
  58 static void __attribute__ ((destructor)) console_cleanup(void)
  59 {
  60     tcsetattr(0, TCSANOW, &original_termios_settings);
  61 }
  62
  63 void console_ansi_raw(void)
  64 {
  65     struct termios tio;
  66
  67     /* Disable stdio buffering */
  68     setbuf(stdin, NULL);
  69     setbuf(stdout, NULL);
  70     setbuf(stderr, NULL);
  71
  72     /* Set the termios flag so we behave the same as libcom32 */
  73     tcgetattr(0, &tio);
  74     tio.c_iflag &= ~ICRNL;
  75     tio.c_iflag |= IGNCR;
  76     tio.c_lflag &= ~(ISIG | ICANON | ECHO);
  77     if (!tio.c_oflag & OPOST)
  78         tio.c_oflag = 0;
  79     tio.c_oflag |= OPOST | ONLCR;
  80     tio.c_cc[VMIN] = 0;
  81     tio.c_cc[VTIME] = 1;        /* Don't 100% busy-wait in Linux */
  82     tcsetattr(0, TCSAFLUSH, &tio);
  83 }
  84
  85 #endif